3D spectacles; accelerometers; monitoring apparatus, electric; Global Positioning System [GPS] apparatus; projection apparatus; stereoscopic apparatus; marking buoys; camcorders; video baby monitors; video screens; hands-free kits for telephones; holograms; optical goods; infrared detectors; light-emitting diodes [LED]; electronic interactive whiteboards; interfaces for computers; cinematographic cameras; thermal imaging cameras; electronic pens [visual display units]; computers; laptop compu...